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Represent the work done by any force. Evaluate the work done for various forces. In physics, work represents a type of energy. Work is done when a force acts on something that undergoes a displacement from one position to another.
- 7.1: Work- The Scientific Definition - Physics LibreTexts
The work done by a force is zero if the displacement is...
- 6.3: Work Done by a Variable Force - Physics LibreTexts
The work done by a constant force of magnitude F on a point...
- 7.1: Work- The Scientific Definition - Physics LibreTexts
Work and energy. The work W done by a constant force of magnitude F on a point that moves a displacement s in a straight line in the direction of the force is the product. For example, if a force of 10 newtons (F = 10 N) acts along a point that travels 2 metres (s = 2 m), then W = Fs = (10 N) (2 m) = 20 J.
The work done by a force is zero if the displacement is either zero or perpendicular to the force. The work done is positive if the force and displacement have the same direction, and negative if they have opposite direction.
In physics, work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on something that undergoes a displacement from one position to another. Forces can vary as a function of position, and displacements can be along various paths between two points.
23 Σεπ 2024 · Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. The units in which work is expressed are the same as those for energy.
When a force acts upon an object while it is moving, work is said to have been done upon the object by that force. Work can be positive work if the force is in the direction of the motion and negative work if it is directed against the motion of the object.
The work done by a constant force of magnitude F on a point that moves a displacement Δx in the direction of the force is simply the product. W = F ⋅ Δx. In the case of a variable force, integration is necessary to calculate the work done. For example, let’s consider work done by a spring.
